Method of making knobs



- c. P. SWICK AND F. 0. KRANTYZ.

METHOD OF MAKING mass,

I PatenizedfFeb. 2s, 1922; 16-

v and Fannie O. KnANrz, citizens of the Un itc d States, residingrespectively, at

v, oompanyingidrawings.

State 016' Connecticut, and atjOakvillfe, in .said county and State have inventeda u certain new and .useful Method of" Making" "againstrotation in theinoperative position.

em ltncmounqsssrononsro AMERICAN RINGCQMPANEDF WATEVRBUR'YQ commie-1'ou'r n ooitronh'i ronor oonnnocbrou'r.

' METHOD on MAKING-intone.

1,407,960. 7 I V r.a licafion fiieiisxine 1e,v To air whom a my mm! 2 Beit known I hat we, CHARLES P. rS WICK Waterbur in the county of NewvHaven and Knobs, of whic'h the following: is ,a specifica tion,reference being'had therein; to :the ac- Our invention relates to a newand Vim-v pi'oyedwrnethod ofiiia'king knobspr the like, "r rern gnoreparticularly to the typeof metal knobs thatv are Idesigned tojbe held 1Iti s the object" of thisiinyention, among other things, to produce byour method a knob of this character that will haveintemoreprojections ofany desired shape that gralprojections upon the contactffa'c e thererof. produced by means that insures'oneor' may or may not be uniforminshape, and

consists in the method of making knobs sub;

stantially as hereinafter described. and more,

numerals of reference designate like parts iformed knob and stillattached to the bar out of which it is constructed; and illustratringone. of the stepsof our method;

each having a solid base integral with the knobitseli. p p I ,1 p Tothese and other ends, our invention particularly pointed out intheclaims. 7

Referring to thedrawings :in which. like.

in the several figures Flgure 1 isian elevation of a partially;

Figure 2 isan end iew thereof;

Figure 3 is afragmentary endview. of one formpf tool for operatingupon'the contact 7; face ofthe knob; M A p Figure 4 is a fragmentaryView of thecompleted knob, and aaseotional view of a pairiof -kdies, forholding the knob during one of the operations of our process;

Figure 5 is a fragmentary View of the lower end of one form of tool forproducing projections upon the knob;

Figure 6 is a View of the contact face of the completed knob; and

Figure 7 is a modified form of tool.

The type of knob such as is shown in the drawing and described herein toillustrate our invention is such as is generally used for Specificationof Letters Patent;

. prongsithereon Aintegra the knob is connected, 1

from a bar 10 of me't ies." s "a, fl "p'jfiu'; orifthefiike', in

though, of course, it is not limited thereto.

thereontliat-theyi haue nosolid zbaser Our invention is largely designedto produce a solid turned knob with projections 01' 9s nifo m in s a e tize or. no s si s red, .andeach having; a sol d base and ,ta-'

pered so as to more readily faQilitatethe; en-

Knj ft saipe. s lul ielli-f i fi d mea ti eihe eir d; Sh pe-.1 A; k ob.so turned butinotsevrered from the bar is, shown 111 Figure 1anddesignatedrby the numerals '11 counse -the illustration discloses"only one of the many shapes in-whichthese knobsbe n Incom s ees 12' Qiib p v d nii hie p ejee ing i e l3 whichistapered on both sidesto itsouter l4 andthe basejupon eachsidepgof the ring lBis provided withrecesses loand:

16 which are below the contact-face A centralrecess 17 isia lsoprovided'in the base i ei dell drill fe -th ope in 8 t e whichisfsubs'equ'ently threaded as shown in r w is no form of tool(byiwhichthe base .of -the knob can be formed substantially asabove-desoribed ,is shown in Figure 3 and designated by the numeral; 19the,,diameter, of

which. may beyaried as, desired. 7 ;After the. kn b l e fo med and ha edfro th b r it i held weenl-e ,p zmf i si an df2l with the ring 13 1projecting beyond t rf r lhereefa 'Aitoe 2,: e nae e rality of recesses23 therein corresponding in shape with the finished projections orprongs 24 and substantially in cross-section the same size and shape asthe cross-section of the ring 13 is now brought up against the knob andsuch portions of the ringl3 as lie between the-recess 23 in the tool 22are compressed or flattened out. The remaining portions of said ringform the projections or prongs 24 which as shown are of substantiallyuniform size and sh p have a solid Patented, Fem-2e; 1922,.

/ What has been heretofore impossible topr'cywde/Witha solid turned knobisaneans I upon the contact facelthereof gto preuentyits rotation,without attaohingauiz ili ary parts thereto or so forming projectinggparts e1 by. turni g a portions 1 t er wi h, t ese betrance thereofinto the surface rwithj which base and are pointed toward the top. By

varying the shape of the sides of the ring 13 or the recesses 23 in thetool 22, or both,

"the shape of the prongs can also be changed from those herein shown.Eight projections or prongs 24 are shown in the drawings, but

. it is obvious that a quarter or less number can be formed equallyaswell. 1

The face of the tool v22, may if desired, be' 'pr'ov'idedwith a ring 25,having the recesses 23 therein, the diameter thereof being such as topermit its enteringthe recesses 15 and16 without any portion of thetotal engaging the contact face 12.

If the metal in'the ring 13 has a tendency to flow outwardly by theaction ofthe tool 22 thereon the recesses 15 and 16 accommodate thismovement so that upon completion of the knob the contact surface 12 isstraight and all displaced metal is below the face thereof.' I j Whilewehave shown in the drawin a knob out from a solid bar, our metho isequally applicable to a cast; knob, a ring 13 being turned or tuned upupon the contact face thereof.

" 1 Minor changes and alterations maybe made w thin our invention'asidefrom those herein suggested and we would therefore have it understoodthatwe do not limit our selves to the exact construction herein'show'nand described, but claim all thatfalls fairly within the spirit andscope of our invention} l the contact face thereof, and thencompress' -What we claim is our invention, and desire to secure by Letters Patent,is:

1. A method of making knobs or the like, which consists in forming aprojection upon "'inga portion of saidypro'ection, the non compressedportion thereo forming one or more prongs. 1 I s a 2. Afmethod ofmakingknob's or the like,

whichconsists in forming a projection upon the contact face thereof,then compressing a .portion of said projections, and shaping theremaining {P01131011 to form one or more prongs. Y

" i 3. A method of making knobs or thelike,

"which'consists in forming a projection upon the contact facethereof,one or more sides" *of which formfaces of the rong or prongs"hereinafter mentioned, and t en compressing a 'portioii' of saidprojectiom'the non-com-" pressed portlon thereof forming-one or. more aprongs p 4. A method of making knobs or the like,

which consists in forming a projection upon.

5. A method of making knobs or the like,

which consists in forming a projecting ring upon the contact facethereof and then compressing a portion of said ring,tl ie noncompressedportion thereof forming one or more pron which consists informing aprojecting ring upon the'contact face thereof-and then compressing aportion of said ring,thenon-compressed portion thereof forming oneormore prongs, equally distant from the center fof said knob upon saidcontact face. f

7. A method of makin" knobsor the like, which consists informing aprojecting ring upon the contact face with flaring j sides whichterminate and join ata' point upon the outer edgeiof said ring,andthentcom 6. A method of making. knobs ortheglike,

pressing a portionof said ring; the' nonf compressed portion formingone. o1" more '81 A method of maklng knobs or the like,

which consists in forming a projectingring upon the contact face thereofsides whichtaper toward each-other awa'y' 'from "the said contact face,I then compressing a portion of said ring, the non-compressed portionforming one or more prongs; two sides thereof being formed fromthe'sides of said ring and the others bein formed so as to taperoutwardly during t e'compression of said ring.

' 9. A method of making knobs o'rthe likef which consists in forming aprojectingring upon the contact face thereofandthencompressing a portlonof said rang, the non-compressedportionforming one or more prongs, whichBIBPOIIItGCl at their outer ends, a por tion of thetapered sides beingoriginally-the sides of sa d ring and the other sides being formedduring the compression thereof.

' In testimony-whereof we have hereunto ailixed our signatures.

1 CHARLES P: sWioK. FRAN o. KRANTZ.

